A proposal to generate entangled compass states with sub-Planck structure

TL;DR

This paper proposes a method to generate entangled compass states with sub-Planck structures using laser-atom interactions, enhancing quantum metrology capabilities.

Contribution

It introduces a novel procedure to produce bipartite entangled compass states with sub-Planck features via laser-atom interactions and internal state measurements.

Findings

Successfully generates entangled compass states with sub-Planck structures

Demonstrates potential for improved quantum measurement precision

Provides a feasible experimental approach for state preparation

Abstract

We illustrate a procedure to generate a bipartite, entangled compass state, which shows sub-Planck structure. The proposed method uses the interaction of a standing wave laser field, with two, two-level atoms and relies on the ability of this system to choose certain mesoscopic bipartite states to couple with the internal degrees of freedom. An appropriate measurement on the internal degrees of freedom then leads to the entangled state, which shows sub-Planck structures, desired for quantum metrology.